I don't think that's possible, as the ebook always "pulls" the books from the content server for the 1150/1200. So until they send a request, you can't "push" any content to them. We will always have to live with tools like impserve or linreb or GEB librarian, I think.

No, it wouldn't use HTTP requests for file I/O. What we need here is to build a filesystem around the usb communications coded in the eb1150 driver for linux (which was based on REBComm version 0.4 which uses usb).

One of the reasons I uploaded the source code to RebComm v1.1.0.5 was to show exactly how it achieved usb communications to read the smartmedia card and then try to adapt it for the EBW1150. Reading the internal memory on the EBW1150 would be stretching it a bit!